fix issues from previous PR comments

25 files changed, 43 insertions, 39 deletions

diff --git a/src/H5Aint.c b/src/H5Aint.c
index 2a0c782..ecbbd48 100644
--- a/src/H5Aint.c
+++ b/src/H5Aint.c
@@ -2026,7 +2026,7 @@ H5A__set_version(const H5F_t *f, H5A_t *attr)
         version = H5O_ATTR_VERSION_1;   /* Write out basic version */
 
     /* Upgrade to the version indicated by the file's low bound if higher */
-    version = (uint8_t)MAX(version, (uint8_t)H5O_attr_ver_bounds[H5F_LOW_BOUND(f)]);
+    ASSIGN_TO_SMALLER_SIZE(version, uint8_t, MAX(version, (uint8_t)H5O_attr_ver_bounds[H5F_LOW_BOUND(f)]), int);
 
     /* Version bounds check */
     if(version > H5O_attr_ver_bounds[H5F_HIGH_BOUND(f)])
diff --git a/src/H5B2cache.c b/src/H5B2cache.c
index 09bb389..fe4827d 100644
--- a/src/H5B2cache.c
+++ b/src/H5B2cache.c
@@ -398,7 +398,7 @@ H5B2__cache_hdr_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_UNUSED le
     *image++ = H5B2_HDR_VERSION;
 
     /* B-tree type */
-    *image++ = (uint8_t)hdr->cls->id;
+    ASSIGN_TO_SMALLER_SIZE(*image++, uint8_t, hdr->cls->id, int);
 
     /* Node size (in bytes) */
     UINT32ENCODE(image, hdr->node_size);
@@ -818,7 +818,7 @@ H5B2__cache_int_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_UNUSED le
     *image++ = H5B2_INT_VERSION;
 
     /* B-tree type */
-    *image++ = (uint8_t)internal->hdr->cls->id;
+    ASSIGN_TO_SMALLER_SIZE(*image++, uint8_t, internal->hdr->cls->id, int);
     HDassert((size_t)(image - (uint8_t *)_image) == (H5B2_INT_PREFIX_SIZE - H5B2_SIZEOF_CHKSUM));
 
     /* Serialize records for internal node */
@@ -1219,7 +1219,7 @@ H5B2__cache_leaf_serialize(const H5F_t H5_ATTR_UNUSED *f, void *_image, size_t H
     *image++ = H5B2_LEAF_VERSION;
 
     /* B-tree type */
-    *image++ = (uint8_t)leaf->hdr->cls->id;
+    ASSIGN_TO_SMALLER_SIZE(*image++, uint8_t, leaf->hdr->cls->id, int);
     HDassert((size_t)(image - (uint8_t *)_image) == (H5B2_LEAF_PREFIX_SIZE - H5B2_SIZEOF_CHKSUM));
 
     /* Serialize records for leaf node */
diff --git a/src/H5B2int.c b/src/H5B2int.c
index ea03ed6..ff835eb 100644
--- a/src/H5B2int.c
+++ b/src/H5B2int.c
@@ -239,7 +239,7 @@ H5B2__split1(H5B2_hdr_t *hdr, uint16_t depth, H5B2_node_ptr_t *curr_node_ptr,
     old_node_nrec = internal->node_ptrs[idx].node_nrec;
 
     /* Determine "middle" record to promote to internal node */
-    mid_record = (uint16_t)(old_node_nrec / 2);
+    ASSIGN_TO_SMALLER_SIZE(mid_record, uint16_t, old_node_nrec / 2, int);
 
     /* Copy "upper half" of records to new child */
     H5MM_memcpy(H5B2_NAT_NREC(right_native, hdr, 0),
diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c
index ecb0f9c..d28beb8 100644
--- a/src/H5Dchunk.c
+++ b/src/H5Dchunk.c
@@ -2180,7 +2180,7 @@ H5D__create_chunk_mem_map_1d(const H5D_chunk_map_t *fm)
         /* Iterate over each chunk in the chunk list */
         curr_node = H5SL_first(fm->sel_chunks);
         while(curr_node) {
-            hssize_t    schunk_points;          /* Number of elements in chunk selection */
+            hsize_t     schunk_points;          /* Number of elements in chunk selection */
             hsize_t     tmp_count = 1;
 
             /* Get pointer to chunk's information */
@@ -2191,9 +2191,9 @@ H5D__create_chunk_mem_map_1d(const H5D_chunk_map_t *fm)
             if((chunk_info->mspace = H5S_copy(fm->mem_space, TRUE, FALSE)) == NULL)
                 HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, FAIL, "unable to copy memory space")
 
-            schunk_points = H5S_GET_SELECT_NPOINTS(chunk_info->fspace);
+            schunk_points = (hsize_t)H5S_GET_SELECT_NPOINTS(chunk_info->fspace);
 
-            if(H5S_select_hyperslab(chunk_info->mspace, H5S_SELECT_SET, mem_sel_start, NULL, &tmp_count, &(const hsize_t)schunk_points) < 0)
+            if(H5S_select_hyperslab(chunk_info->mspace, H5S_SELECT_SET, mem_sel_start, NULL, &tmp_count, &schunk_points) < 0)
                 HGOTO_ERROR(H5E_DATASET, H5E_CANTSELECT, FAIL, "can't create chunk memory selection")
 
             mem_sel_start[0] += schunk_points;
@@ -5668,7 +5668,7 @@ H5D__chunk_addrmap_cb(const H5D_chunk_rec_t *chunk_rec, void *_udata)
     hsize_t        chunk_index;
     int            ret_value = H5_ITER_CONT;     /* Return value */
 
-    FUNC_ENTER_STATIC
+    FUNC_ENTER_STATIC_NOERR
 
     /* Compute the index for this chunk */
     chunk_index = H5VM_array_offset_pre(rank, udata->common.layout->down_chunks, chunk_rec->scaled);
diff --git a/src/H5Dint.c b/src/H5Dint.c
index bd87c7f..772a150 100644
--- a/src/H5Dint.c
+++ b/src/H5Dint.c
@@ -2197,7 +2197,7 @@ H5D_nameof(const H5D_t *dataset)
     /* Use FUNC_ENTER_NOAPI_NOINIT_NOERR here to avoid performance issues */
     FUNC_ENTER_NOAPI_NOINIT_NOERR
 
-    FUNC_LEAVE_NOAPI((H5G_name_t *)(dataset ? &(dataset->path) : NULL))
+    FUNC_LEAVE_NOAPI(dataset ? &(dataset->path) : NULL)
 } /* end H5D_nameof() */
 
 
diff --git a/src/H5EAcache.c b/src/H5EAcache.c
index 7b1968e..b51d29e 100644
--- a/src/H5EAcache.c
+++ b/src/H5EAcache.c
@@ -487,7 +487,7 @@ H5EA__cache_hdr_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_UNUSED le
     *image++ = H5EA_HDR_VERSION;
 
     /* Extensible array type */
-    *image++ = (uint8_t)hdr->cparam.cls->id;
+    ASSIGN_TO_SMALLER_SIZE(*image++, uint8_t, hdr->cparam.cls->id, int);
 
     /* General array creation/configuration information */
     *image++ = hdr->cparam.raw_elmt_size;          /* Element size in file (in bytes) */
diff --git a/src/H5FAcache.c b/src/H5FAcache.c
index e142ae2..2b5187d 100644
--- a/src/H5FAcache.c
+++ b/src/H5FAcache.c
@@ -418,6 +418,7 @@ H5FA__cache_hdr_serialize(const H5F_t *f, void *_image, size_t H5_ATTR_UNUSED le
 
     /* Fixed array type */
     *image++ = (uint8_t)hdr->cparam.cls->id;
+    ASSIGN_TO_SMALLER_SIZE(*image++, uint8_t, hdr->cparam.cls->id, int);
 
     /* General array creation/configuration information */
     *image++ = hdr->cparam.raw_elmt_size;          /* Element size in file (in bytes) */
diff --git a/src/H5FScache.c b/src/H5FScache.c
index fbdada2..d4f77f4 100644
--- a/src/H5FScache.c
+++ b/src/H5FScache.c
@@ -735,7 +735,7 @@ H5FS__cache_hdr_serialize(const H5F_t *f, void *_image, size_t len,
     *image++ = H5FS_HDR_VERSION;
 
     /* Client ID */
-    *image++ = (uint8_t)fspace->client;
+    ASSIGN_TO_SMALLER_SIZE(*image++, uint8_t, fspace->client, int);
 
     /* Total space tracked */
     H5F_ENCODE_LENGTH(f, image, fspace->tot_space);
@@ -1046,8 +1046,8 @@ H5FS__cache_sinfo_deserialize(const void *_image, size_t len, void *_udata,
 
         /* Walk through the image, deserializing sections */
         do {
-            hsize_t sect_size;      /* Current section size */
-            size_t node_count;      /* # of sections of this size */
+            hsize_t sect_size = 1;      /* Current section size */
+            size_t node_count = 1;      /* # of sections of this size */
             size_t u;               /* Local index variable */
 
             /* The number of sections of this node's size */
@@ -1061,7 +1061,7 @@ H5FS__cache_sinfo_deserialize(const void *_image, size_t len, void *_udata,
             /* Loop over nodes of this size */
             for(u = 0; u < node_count; u++) {
                 H5FS_section_info_t *new_sect;  /* Section that was deserialized */
-                haddr_t sect_addr;      /* Address of free space section in the address space */
+                haddr_t sect_addr = 1;  /* Address of free space section in the address space */
                 unsigned sect_type;     /* Type of free space section */
                 unsigned des_flags;     /* Flags from deserialize callback */
 
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index 9ad33b2..0fe1867 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -178,19 +178,19 @@ typedef struct H5F_t H5F_t;
 
 /* Decode a variable-sized buffer */
 /* (Assumes that the high bits of the integer will be zero) */
-#  define DECODE_VAR(p, n, l) {                              \
+#  define DECODE_VAR(p, typ, n, l) {                              \
    size_t _i;                                      \
                                         \
    n = 0;                                      \
    (p) += l;                                      \
    for (_i = 0; _i < l; _i++)                              \
-      n = (uint16_t)((n << 8) | *(--p));                              \
+      n = (typ)((n << 8) | *(--p));                              \
    (p) += l;                                      \
 }
 
 /* Decode a variable-sized buffer into a 32-bit unsigned integer */
 /* (Assumes that the high bits of the integer will be zero) */
-#  define UINT32DECODE_VAR(p, n, l)     DECODE_VAR(p, n, l)
+#  define UINT32DECODE_VAR(p, n, l)     DECODE_VAR(p, uint32_t, n, l)
 
 #  define INT64DECODE(p, n) {                              \
    /* WE DON'T CHECK FOR OVERFLOW! */                          \
@@ -216,14 +216,14 @@ typedef struct H5F_t H5F_t;
 
 /* Decode a variable-sized buffer into a 64-bit unsigned integer */
 /* (Assumes that the high bits of the integer will be zero) */
-#  define UINT64DECODE_VAR(p, n, l)     DECODE_VAR(p, n, l)
+#  define UINT64DECODE_VAR(p, n, l)     DECODE_VAR(p, uint64_t, n, l)
 
 /* Decode a 64-bit unsigned integer and its length from a variable-sized buffer */
 /* (Assumes that the high bits of the integer will be zero) */
 #  define UINT64DECODE_VARLEN(p, n) {                          \
    unsigned _s = *(p)++;                              \
                                         \
-   UINT64DECODE_VAR(p, n, _s);                              \
+   UINT64DECODE_VAR(p, uint64_t, n, _s);                              \
 }
 
 #  define H5_DECODE_UNSIGNED(p, n) {                          \
diff --git a/src/H5HFtest.c b/src/H5HFtest.c
index 9eb8ed2..b0291b8 100644
--- a/src/H5HFtest.c
+++ b/src/H5HFtest.c
@@ -481,7 +481,7 @@ H5HF_get_id_type_test(const void *_id, unsigned char *obj_type)
     HDassert(obj_type);
 
     /* Get the type for a heap ID */
-    *obj_type = (unsigned char)(*id & H5HF_ID_TYPE_MASK);
+    ASSIGN_TO_SMALLER_SIZE(*obj_type, unsigned char, *id & H5HF_ID_TYPE_MASK, int);
 
     FUNC_LEAVE_NOAPI(SUCCEED)
 } /* H5HF_get_id_type_test() */
diff --git a/src/H5Oainfo.c b/src/H5Oainfo.c
index 23aba09..d923a9f 100644
--- a/src/H5Oainfo.c
+++ b/src/H5Oainfo.c
@@ -194,7 +194,7 @@ H5O_ainfo_encode(H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, uint8_t *p, co
     *p++ = H5O_AINFO_VERSION;
 
     /* The flags for the attribute indices */
-    flags = (unsigned char)(ainfo->track_corder ? H5O_AINFO_TRACK_CORDER : 0);
+    ASSIGN_TO_SMALLER_SIZE(flags, unsigned char, ainfo->track_corder ? H5O_AINFO_TRACK_CORDER : 0, int);
     flags = (unsigned char)(flags | (ainfo->index_corder ? H5O_AINFO_INDEX_CORDER : 0));
     *p++ = flags;
 
diff --git a/src/H5Oattr.c b/src/H5Oattr.c
index b7d4dd5..2697959 100644
--- a/src/H5Oattr.c
+++ b/src/H5Oattr.c
@@ -328,8 +328,9 @@ H5O_attr_encode(H5F_t *f, uint8_t *p, const void *mesg)
     UINT16ENCODE(p, attr->shared->ds_size);
 
     /* The character encoding for the attribute's name, in later versions */
-    if(attr->shared->version >= H5O_ATTR_VERSION_3)
-        *p++ = (uint8_t)attr->shared->encoding;
+    if(attr->shared->version >= H5O_ATTR_VERSION_3) {
+        ASSIGN_TO_SMALLER_SIZE(*p++, uint8_t, attr->shared->encoding, int);
+    }
 
     /* Write the name including null terminator */
     H5MM_memcpy(p, attr->shared->name, name_len);
diff --git a/src/H5Ofill.c b/src/H5Ofill.c
index cb75bc3..14b12db 100644
--- a/src/H5Ofill.c
+++ b/src/H5Ofill.c
@@ -408,10 +408,10 @@ H5O_fill_new_encode(H5F_t H5_ATTR_UNUSED *f, uint8_t *p, const void *_fill)
 
     if(fill->version < H5O_FILL_VERSION_3) {
         /* Space allocation time */
-        *p++ = (uint8_t)fill->alloc_time;
+        ASSIGN_TO_SMALLER_SIZE(*p++, uint8_t, fill->alloc_time, int);
 
         /* Fill value writing time */
-        *p++ = (uint8_t)fill->fill_time;
+        ASSIGN_TO_SMALLER_SIZE(*p++, uint8_t, fill->fill_time, int);
 
         /* Whether fill value is defined */
         *p++ = (uint8_t)fill->fill_defined;
diff --git a/src/H5Ofsinfo.c b/src/H5Ofsinfo.c
index fd62aa2..82afa96 100644
--- a/src/H5Ofsinfo.c
+++ b/src/H5Ofsinfo.c
@@ -225,6 +225,7 @@ H5O_fsinfo_encode(H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, uint8_t *p, c
 
     *p++ = (uint8_t)fsinfo->version;    /* message version */
     *p++ = (uint8_t)fsinfo->strategy;        /* File space strategy */
+    ASSIGN_TO_SMALLER_SIZE(*p++, uint8_t, fsinfo->strategy, unsigned);
     *p++ = (unsigned char)fsinfo->persist;    /* Free-space persist or not */
     H5F_ENCODE_LENGTH(f, p, fsinfo->threshold); /* Free-space section size threshold */
 
diff --git a/src/H5Oginfo.c b/src/H5Oginfo.c
index abe7879..027f33c 100644
--- a/src/H5Oginfo.c
+++ b/src/H5Oginfo.c
@@ -183,7 +183,7 @@ H5O_ginfo_encode(H5F_t H5_ATTR_UNUSED *f, hbool_t H5_ATTR_UNUSED disable_shared,
     *p++ = H5O_GINFO_VERSION;
 
     /* The flags for the group info */
-    flags = (unsigned char)(ginfo->store_link_phase_change ?  H5O_GINFO_STORE_PHASE_CHANGE : 0);
+    ASSIGN_TO_SMALLER_SIZE(flags, unsigned char, ginfo->store_link_phase_change ?  H5O_GINFO_STORE_PHASE_CHANGE : 0, int);
     flags = (unsigned char)(flags | (ginfo->store_est_entry_info ?  H5O_GINFO_STORE_EST_ENTRY_INFO : 0));
     *p++ = flags;
 
diff --git a/src/H5Oint.c b/src/H5Oint.c
index 9d4c066..b923605 100644
--- a/src/H5Oint.c
+++ b/src/H5Oint.c
@@ -239,7 +239,7 @@ H5O_set_version(H5F_t *f, H5O_t *oh, uint8_t oh_flags, hbool_t store_msg_crt_idx
         version = H5O_VERSION_1;
 
     /* Upgrade to the version indicated by the file's low bound if higher */
-    version = (uint8_t)MAX(version, (uint8_t)H5O_obj_ver_bounds[H5F_LOW_BOUND(f)]);
+    ASSIGN_TO_SMALLER_SIZE(version, uint8_t, MAX(version, (uint8_t)H5O_obj_ver_bounds[H5F_LOW_BOUND(f)]), int);
 
     /* Version bounds check */
     if(version > H5O_obj_ver_bounds[H5F_HIGH_BOUND(f)])
diff --git a/src/H5Olayout.c b/src/H5Olayout.c
index 2a2a07b..143f49e 100644
--- a/src/H5Olayout.c
+++ b/src/H5Olayout.c
@@ -570,7 +570,7 @@ H5O__layout_encode(H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, uint8_t *p,
              H5O_LAYOUT_VERSION_3 : mesg->version);
 
     /* Layout class */
-    *p++ = (uint8_t)mesg->type;
+    ASSIGN_TO_SMALLER_SIZE(*p++, uint8_t, mesg->type, int);
 
     /* Write out layout class specific information */
     switch(mesg->type) {
diff --git a/src/H5Olinfo.c b/src/H5Olinfo.c
index 475f66f..f605e8e 100644
--- a/src/H5Olinfo.c
+++ b/src/H5Olinfo.c
@@ -203,7 +203,7 @@ H5O_linfo_encode(H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, uint8_t *p, co
     *p++ = H5O_LINFO_VERSION;
 
     /* The flags for the link indices */
-    index_flags = (unsigned char)(linfo->track_corder ? H5O_LINFO_TRACK_CORDER : 0);
+    ASSIGN_TO_SMALLER_SIZE(index_flags, uint8_t, linfo->track_corder ? H5O_LINFO_TRACK_CORDER : 0, int);
     index_flags = (uint8_t)(index_flags | (linfo->index_corder ? H5O_LINFO_INDEX_CORDER : 0));
     *p++ = index_flags;
 
diff --git a/src/H5Olink.c b/src/H5Olink.c
index 1f0c6c7..3453565 100644
--- a/src/H5Olink.c
+++ b/src/H5Olink.c
@@ -316,7 +316,7 @@ H5O_link_encode(H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, uint8_t *p, con
 
     /* Store the type of a non-default link */
     if(link_flags & H5O_LINK_STORE_LINK_TYPE)
-        *p++ = (uint8_t)lnk->type;
+        ASSIGN_TO_SMALLER_SIZE(*p++, uint8_t, lnk->type, int);
 
     /* Store the link creation order in the file, if its valid */
     if(lnk->corder_valid)
diff --git a/src/H5Osdspace.c b/src/H5Osdspace.c
index 33310dc..7b6c444 100644
--- a/src/H5Osdspace.c
+++ b/src/H5Osdspace.c
@@ -256,8 +256,9 @@ H5O_sdspace_encode(H5F_t *f, uint8_t *p, const void *_mesg)
     *p++ = (uint8_t)flags;
 
     /* Dataspace type */
-    if(sdim->version > H5O_SDSPACE_VERSION_1)
-        *p++ = (uint8_t)sdim->type;
+    if(sdim->version > H5O_SDSPACE_VERSION_1) {
+        ASSIGN_TO_SMALLER_SIZE(*p++, uint8_t, sdim->type, int);
+    }
     else {
         *p++ = 0; /*reserved*/
         *p++ = 0; /*reserved*/
diff --git a/src/H5Rint.c b/src/H5Rint.c
index 77227ec..a318ddc 100644
--- a/src/H5Rint.c
+++ b/src/H5Rint.c
@@ -993,7 +993,7 @@ H5R__decode(const unsigned char *buf, size_t *nbytes, H5R_ref_priv_t *ref)
         HGOTO_ERROR(H5E_REFERENCE, H5E_CANTDECODE, FAIL, "Buffer size is too small")
 
     /* Set new reference */
-    ref->type = (int8_t)((H5R_type_t)*p++);
+    ASSIGN_TO_SMALLER_SIZE(ref->type, int8_t, (H5R_type_t)*p++, int);
     if(ref->type <= H5R_BADTYPE || ref->type >= H5R_MAXTYPE)
         HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid reference type")
 
diff --git a/src/H5SMcache.c b/src/H5SMcache.c
index ee28fa4..40692cd 100644
--- a/src/H5SMcache.c
+++ b/src/H5SMcache.c
@@ -397,7 +397,7 @@ H5SM__cache_table_serialize(const H5F_t *f, void *_image, size_t len,
         *image++ = H5SM_LIST_VERSION;
 
         /* Is message index a list or a B-tree? */
-        *image++ = (uint8_t)table->indexes[u].index_type;
+        ASSIGN_TO_SMALLER_SIZE(*image++, uint8_t, table->indexes[u].index_type, int);
 
         /* Type of messages in the index */
         UINT16ENCODE(image, table->indexes[u].mesg_types);
diff --git a/src/H5SMmessage.c b/src/H5SMmessage.c
index e085204..2a04423 100644
--- a/src/H5SMmessage.c
+++ b/src/H5SMmessage.c
@@ -298,7 +298,7 @@ H5SM__message_encode(uint8_t *raw, const void *_nrecord, void *_ctx)
     /* Sanity check */
     HDassert(ctx);
 
-    *raw++ = (uint8_t)message->location;
+    ASSIGN_TO_SMALLER_SIZE(*raw++, uint8_t, message->location, int);
     UINT32ENCODE(raw, message->hash);
 
     if(message->location == H5SM_IN_HEAP) {
diff --git a/src/H5Shyper.c b/src/H5Shyper.c
index cfcc5ac..0f73e7b 100644
--- a/src/H5Shyper.c
+++ b/src/H5Shyper.c
@@ -3674,7 +3674,7 @@ H5S__hyper_get_version_enc_size(const H5S_t *space, hsize_t block_count, uint32_
                 /* Determine the encoding size */
                 enc2 = H5S__hyper_get_enc_size_real(max2);
 
-                *enc_size = (uint8_t)MAX(enc1, enc2);
+                ASSIGN_TO_SMALLER_SIZE(*enc_size, uint8_t, MAX(enc1, enc2), int);
             } /* end if */
             else {
                 hsize_t max_size = block_count;
diff --git a/src/H5Tbit.c b/src/H5Tbit.c
index c6c1777..1a7ea9b 100644
--- a/src/H5Tbit.c
+++ b/src/H5Tbit.c
@@ -363,7 +363,7 @@ H5T__bit_set(uint8_t *buf, size_t offset, size_t size, hbool_t value)
 
     /* The middle bytes */
     while (size >= 8) {
-        buf[idx++] = (uint8_t)(value ? 0xff : 0x00);
+        ASSIGN_TO_SMALLER_SIZE(buf[idx++], uint8_t, value ? 0xff : 0x00, int);
         size -= 8;
     }
 
@@ -532,7 +532,7 @@ H5T__bit_inc(uint8_t *buf, size_t start, size_t size)
         acc = buf[idx];
         acc++;
         carry = acc & 0x100;
-        buf[idx] = (uint8_t)(acc & 0xff);
+        ASSIGN_TO_SMALLER_SIZE(buf[idx], uint8_t, acc & 0xff, unsigned);
         idx++;
         size -= 8;
     }